Uri Golman / Head portrait of photographer Uri Golman in temperatures of -40 degrees celsius, with frost in his beard. Greenland. March 2009. Model released

Doug Allan / Emperor penguin males incubating eggs huddle for warmth at -40 degrees centigrade, winter, Antarctica. Green is excrement on snow. {Aptenodytes forsteri}

Doug Allan / Emperor penguin {Aptenodytes forsteri} males huddle for warmth in minus 40 degrees centigrade while incubating eggs in winter, Antarctica Winter extreme cold survival birds seabirds nesting-behaviour

Yva Momatiuk & John Eastcott / Sandstone rock formations, Vermillion Cliffs National Monument, Arizona

Alex Mustard,Alex Mustard / A diver and a hydrothermal chimney. Note that he is obscured by the different temperature waters (from the chimney and the surrounding water) which are unable to mix. The sea water was 4 degrees Celsi...

Chadden Hunter / Cameraman Jeff Turner and Producer Chadden Hunter exposed at -40 degrees in Arctic circle in Northern Canada while filming wolves and bison hunting sequence. Taken on location for BBC Frozen Planet se...

Ole Jorgen Liodden / Iceberg in calm arctic seas at 80 degrees north. Svalbard, September.

Bryan and Cherry Alexander / Boiling water exploding into vapour and ice when thrown into cold air at -51 degrees celsius. This is because boiling water is close to a gas and breaks into tiny droplets that freeze simultaneously....

Wild Wonders of Europe / Munier / Man at Roros market which has been there since 1854, exhibitors and vendors come from a long way off, travelling by horse and sleigh, -35 degrees centigrade, Dovrefjell National Park, Norway, February...

Wild Wonders of Europe / Munier / People walking and travelling by horse and sleigh to Roros market. Started in 1854, exhibitors and vendors come from a long way off, -35 degrees centigrade, Dovrefjell National Park, Norway, February...

Wild Wonders of Europe / Munier / People travelling by horse and sleigh to Roros market. Started in 1854, exhibitors and vendors come from a long way off, -35 degrees centigrade, Dovrefjell National Park, Norway, February 2009

Yukihiro Fukuda / Japanese macaque / Snow monkey {Macaca fuscata} 7-month-old monkey bathing in hot springs, examining its hands, water at 40 degrees, Jigokudani, Nagano, Japan

Yukihiro Fukuda / Japanese macaque / Snow monkey {Macaca fuscata} adult female bathing in hot springs tapping the water surface with hand in play, water at 40 degrees, Jigokudani, Nagano, Japan

Yukihiro Fukuda / Japanese macaque / Snow monkey {Macaca fuscata} group of monkeys bathing in hot springs, water at 40 degrees, Jigokudani, Nagano, Japan

Staffan Widstrand / High arctic landscape in spring, -40 degrees C, Bylot Is, Baffin Is, North West Territories, Canada, 1995

Gerry Ellis / Aerial view of barchan dunes showing typical horns and downwind slip face, at approximately 32 degrees, Skeleton Coast National Park, Namibia

Ingo Arndt / Japanese macaques grooming in hot thermal spring {Macaca fuscata} Joshin-etsu NP, Japan. These primates can survive winter temperatures below -15 degrees by bathing in the springs

Norbert Wu / Swordfish (Xiphias gladius) worldwide, can tolerate temperatures of five degrees Celsius and dive to 650 meters, uses sword to kill prey such as squid, can grow to 14 feet and 1200 pounds, Sardinia, I...

Asgeir Helgestad / Whooper swans in temperature of -30 degrees C Numedalslagen river, Norway

Ashley Cooper / Woman taking polar plunge in 2 degrees C water off an Antarctic cruise ship into sea. Antarctic Peninsula, Antarctica. February 2019.

Jack Dykinga / Burrowing owl (Athene cunicularia) curious juvenile cocking head at 90 degrees. Sheltering in shade of Corn / Maize crop. Marana, Arizona, USA.

Heather Angel / Sacred lotus (Nelumbo nucifera) taken with infra-red thermograph camera. Top of receptacle hottest at 35 degrees Celsius with stamens at 30 degrees Celsius. Cultivated in glasshouse, Surrey, England,...

Markus Varesvuo / Hawk owl (Surnia ulula), looking at camera with head turned 180 degrees, perched on branch. Helsinki, Finland. November.

Markus Varesvuo / Peregrine (Falco peregrinus) two looking curiously at camera, heads rotated by 90 degrees. Vaala, North Ostrobothnia, Finland. June.

Will Watson / Cwmyoy Church, the tower leans 5.2 degrees from the perpendicular, due to post glacial landslips occurring on Cwmyoy Graig, the church is located on its lower slope, Brecon Beacons National Park, Monm...

Will Watson / Cwmyoy Church, the tower leans 5.2 degrees from the perpendicular, due to post glacial landslips occurring on Cwmyoy Graig, the church is located on its lower slope, Brecon Beacons National Park, Monm...

Tui De Roy / Blue-footed booby (Sula nebouxii) diving at 45 degrees towards sea. Punta Cormorant, Floreana Island, Galapagos.

Jack Dykinga / Burrowing owl (Athene cunicularia) with head rotated by 90 degrees. Marana, Pima County, Arizona, USA.

Ashley Cooper / Solar panels that focus the suns rays on heat exchangers to boil oil, which is then sent down to the kitchens below to heat the cookers. This picture shows a newspaper sets on fire in the 300 degrees...

Sue Flood / Marker to show geographical South Pole 90 degrees South with USA flag, near Scott-Amundsen base, Antarctica.December 2016

Sue Flood / Wildlife photographer Sue Flood reflected in marker at ceremonial South Pole 90 degrees South near Scott-Amundsen base, Antarctica. December 2016

Sue Flood / Wildlife photographer Sue Flood at ceremonial South Pole 90 degrees South near Scott-Amundsen, Antarctica. December 2016

Christophe Courteau / Desert chameleon (Chamaeleo namaquensis), looking around with turret eye rotating almost 180 degrees. Namib Desert, Namibia.

Ingo Arndt / Edge of icefield in late winter, 80 degrees north, Spitsbergen, Svalbard, Norway, April

Charlie Summers / The Witch Head Nebula, IC 2118. If you reverse the image 180 degrees, you can readily see the profile of the witch, not so recognizable upside down. This is the correct orientation as seen from East...

Staffan Widstrand / A reindeer sledding tour experience with sami reindeer herdsmen at the Reindeer Lodge in -25 degrees C, run by Nutti Sami Siida, near the Icehotel, in Jukkasjarvi, Lapland, Laponia, Norrbotten county,...

Staffan Widstrand / The Reindeer Lodge in mid winter colours in -39 degrees C, run by Nutti Sami Siida, near the Icehotel, in Jukkasjarvi, Lapland, Laponia, Norrbotten county, Sweden

Staffan Widstrand / The Reindeer Lodge at dusk in mid winter colours in -39 degrees C, run by Nutti Sami Siida, near the Icehotel, in Jukkasjarvi, Lapland, Laponia, Norrbotten county, Sweden

Staffan Widstrand / Mid winter colours in -39 degrees C, in the Luxury suite, on a polar bear fur, at the Icehotel, in Jukkasjarvi, Lapland, Laponia, Norrbotten county, Sweden

Staffan Widstrand / A reindeer sledding tour experience with sami reindeer herdsmen at the Reindeer Lodge in -25 degrees C, run by Nutti Sami Siida, near the Icehotel, in Jukkasjarvi, Lapland, Laponia, Norrbotten county,...

Staffan Widstrand / A reindeer sledding tour experience with sami reindeer herdsmen at the Reindeer Lodge in -25 degrees C, run by Nutti Sami Siida, near the Icehotel, in Jukkasjarvi, Lapland, Laponia, Norrbotten county,...

Ingo Arndt / Midnight sun over icefield in late winter, 80 degrees north, Spitsbergen, Svalbard, Norway, April Taken on the day of the first midnight sun of the year.

Sebastian Kennerknecht / Snow Leopard (Panthera uncia) biologist, David Cooper, walking in mountains, Sarychat-Ertash Strict Nature Reserve, Tien Shan Mountains, eastern Kyrgyzstan

Jussi Murtosaari / Great Grey Owl (Strix nebulosa) head turned 180 degrees looking over back, Finland. November.

Norbert Wu / Sea stacks along coast, Olympic National Park, Washington

Yva Momatiuk & John Eastcott / Eroded sandstone, Vermillion Cliffs National Monument, Arizona

Yva Momatiuk & John Eastcott / Sandstone rock formations, Vermillion Cliffs National Monument, Arizona

Roy Mangersnes / Fragments of ice drifting under full moon. The ice sheet was at a record 83 degrees north, Svalbard, September, 2013.

Alex Mustard / Thermal pool filled with water that remains close to 30 degrees celsius all year, and is able to support a population of fancy goldfish (Carassius auratus) despite being close to the Arctic Circle. Hu...

Laurent Geslin / Trapper carrying his catch of one wolverine and four pine martens through the taiga of Manitoba, at -45 degrees C. Canada.

Laurent Geslin / Trapper with his catch of one wolverine and four pine martens through the taiga of Manitoba, at -45 degrees C, Canada.

Christophe Courteau / Tourists bathing in Blue Lagoon 42 degrees C, Krisuvik, Iceland

Christophe Courteau / Tourists bathing in Blue Lagoon 42 degrees C, Krisuvik, Iceland

Steve Gettle / Great Horned Owl (Bubo virginianus), rotating head 180 degrees, Howell Nature Center, Michigan. Sequence 2 of 2

Klaus Echle / Eagle Owl (Bubo bubo) perched on cross of a gravestone, head turned 180 degrees. Black Forest, Germany, January.

Bryan and Cherry Alexander / At -40 degrees Celsius frost smoke rising off the freezing sea at the floe edge near Igloolik, Nunavut, Canada, 1990.

Bryan and Cherry Alexander / Arctic photographer Bryan Alexander holding his camera, dressed in caribou furs at minus 40 degrees. Nunuvut, Canada, 1987. Editorial use only.

Bryan and Cherry Alexander / Layers visible on iceberg indicate that it has rolled 90 degrees. Antarctica, 2009.

Bryan and Cherry Alexander / Skiers leaving their aircraft as they start on the 'Last Degree' expedition from 89 degrees south to the South Pole. Antarctica, January 2006.

Bryan and Cherry Alexander / Skiers leaving their aircraft as they start on the 'Last Degree' expedition from 89 degrees south to the South Pole. Antarctica, January 2006.

Yva Momatiuk & John Eastcott / Maple (Acer sp) and Cottonwood (Populus sp) trees in fall colors, Zion National Park, Utah

Yva Momatiuk & John Eastcott / Sandstone buttes, Vermilion Cliffs National Monument, Colorado Plateau, Utah

Yva Momatiuk & John Eastcott / Coniferous trees and massive boulders along Tenaya Lake, Yosemite National Park, California

Yva Momatiuk & John Eastcott / Boreal forest with thick moss and lichens on forest floor, British Columbia, Canada

Yva Momatiuk & John Eastcott / Black Spruce (Picea mariana) grove, Denali National Park, Alaska

Yva Momatiuk & John Eastcott / Gum Tree (Eucalyptus sp) group lining road with cumulus clouds above, Nullarbor Plain, Western Australia, Australia

Yva Momatiuk & John Eastcott / Subtropical rainforest near Fox Glacier, South Island, New Zealand

Troels Jacobsen/Arcticphoto / Polar Bear (Ursus maritimus) mother with yearling cub, with their reflections in a melt pool. 82 degrees north, north of Seven Islands, Polar Basin, Svalbard, 2006.

Troels Jacobsen/Arcticphoto / Polar Bear (Ursus maritimus) on sea ice with her reflection in a melt pool. 82 degrees north, north of Seven Islands, Polar Basin, Svalbard, 2006.

Bryan and Cherry Alexander / Boiling water exploding into vapour and ice when thrown into cold air at -51 degrees celsius. This is because boiling water is close to a gas and breaks into tiny droplets that freeze simultaneously....

Bryan and Cherry Alexander / Thermometer on tree reading -36 degrees celsius during winter in Yakutia. Eastern Siberia, Russia, 2001.

Bryan and Cherry Alexander / Thermometer showing reading of -52 degrees celsius at Verkhoyansk. Yakutia, Siberia, Russia, 1999.

Bryan and Cherry Alexander / Boiling water exploding into vapour and ice when thrown into cold air at -51 degrees celsius. This is because boiling water is close to a gas and breaks into tiny droplets that freeze simultaneously....

Bryan and Cherry Alexander / Boiling water exploding into vapour and ice when thrown into cold air at -51 degrees celsius. This is because boiling water is close to a gas and breaks into tiny droplets that freeze simultaneously....

Bryan and Cherry Alexander / The Meteorological Station at Verkhoyansk where the record low temperature of -67.8 degrees celsius was recorded in 1885. Siberia, Russia, 1999.

Bryan and Cherry Alexander / Girl frosted up at -52 degrees celsius in winter. Verkhoyansk, Yakutia, Siberia, Russia, 1999.

Roy Mangersnes / Sled dog resting, covered in snow, minus 20 degrees centigrade, West coast of Spitsbergen, Svalbard, Norway, March

Will Watson / Squeaking Sand Bay with metamorphic rocks tilted at 120 degrees, Nkwichi Lodge, Lake Malawi, Niassa province, Mozambique, February 2008

Wild Wonders of Europe / Munier / People walking and travelling by horse and sleigh to Roros market, started in 1854. Exhibitors and vendors come from a long way off, -35 degrees centigrade, Dovrefjell National Park, Norway, February...

Wild Wonders of Europe / Munier / Woman with breath showing in cold air (-35 degrees centigrade) at Roros market started in 1854. Exhibitors and vendors come from a long way off, travelling by horse and sleigh, Dovrefjell National Par...

Wild Wonders of Europe / Munier / Man wearing fur hat and coat at Roros market first started in 1854. Exhibitors and vendors come from a long way off, travelling by horse and sleigh, -35 degrees centigrade, Dovrefjell National Park, N...

Wild Wonders of Europe / Munier / Horse with some frozen fur, used to pull sleigh to Roros market, started in 1854, -35 degrees centigrade, Dovrefjell National Park, Norway, February 2009

Wild Wonders of Europe / Munier / Woman at Roros market, started in 1854, exhibitors and vendors come from a long way off, travelling by horse and sleigh, -35 degrees centigrade, Dovrefjell National Park, Norway, February 2009

Wild Wonders of Europe / Munier / People talking on the way to Roros market, started in 1854. Exhibitors and vendors come from a long way off, travelling by horse and sleigh, -35 degrees centigrade, Dovrefjell National Park, Norway, F...

Wild Wonders of Europe / Munier / Man at Roros market, his breath showing in cold air (-35 degrees centigrade). The market has been happening since 1854, exhibitors and vendors come from a long way off, travelling by horse and sleigh,...

Wild Wonders of Europe / Munier / Girl at Roros market, started in 1854, exhibitors and vendors come from a long way off, travelling by horse and sleigh, -35 degrees centigrade, Dovrefjell National Park, Norway, February 2009

Yva Momatiuk & John Eastcott / Sandstone formations, Vermilion Cliffs National Monument, Colorado Plateau, Utah

Angelo Gandolfi / Eagle owl (Bubo bubo) composite image showing its ability to twist its necks through 180 degrees

Angelo Gandolfi / Eagle Owl (Bubo bubo) composite image showing its ability to twist its necks through 180 degrees

Francis Abbott / The arid mountains of the Sinai reach the shores of the Gulf of Aqaba, Sinai Peninsula, Egypt. It is mid August and the dust filled air is at 50 degrees centigrade.

Yukihiro Fukuda / Japanese macaque / Snow monkey {Macaca fuscata} 7-month-old monkey bathing in hot springs, scratching its head, water at 40 degrees, Jigokudani, Nagano, Japan

Yukihiro Fukuda / Japanese macaque / Snow monkey {Macaca fuscata} 8-month-old monkey bathing in hot springs, water at 40 degrees, Jigokudani, Nagano, Japan

Yukihiro Fukuda / Japanese macaque / Snow monkey {Macaca fuscata} adult female bathing in hot springs, playing with the water in her hands, water at 40 degrees, Jigokudani, Nagano, Japan

Yukihiro Fukuda / Japanese macaque / Snow monkey {Macaca fuscata} two monkeys bathing in hot springs, water at 40 degrees, Jigokudani, Nagano, Japan

Yukihiro Fukuda / Japanese macaque / Snow monkey {Macaca fuscata} 8-month-old monkey bathing in hot springs, water at 40 degrees, Jigokudani, Nagano, Japan